export const VSHADER_SOURCE = 
  'attribute vec4 a_Position;\n' +
  'attribute float a_PointSize;\n' +
  'void main() {\n' +
  '  gl_Position = a_Position;\n' + // Set the vertex coordinates of the point
  '  gl_PointSize = a_PointSize;\n' +                    // Set the point size
  '}\n';

// Fragment shader program
export const FSHADER_SOURCE =
  'void main() {\n' +
  '  gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n' + // Set the point color
  '}\n';